As of the census of 2000, there were 30,848 people, 12,484 households, and 9,725 families residing in the city. The population density was 171.4/km sq (443.9/mi sq). There were 16,260 housing units at an average density of 90.3/km sq (234.0/mi sq). The racial makeup of the city was 85.97% Race (United States Census)White, 2.61% Race (United States Census)Black or Race (United States Census)African American, 0.43% Race (United States Census)Native American, 1.07% Race (United States Census)Asian, 0.05% Race (United States Census)Pacific Islander, 7.87% from Race (United States Census)other races, and 1.99% from two or more races. 23.29% of the population were Race (United States Census)Hispanic or Race (United States Census)Latino of any race. There were 12,484 households out of which 21.5% had children under the age of 18 living with them, 69.5% were Marriagemarried couples living together, 5.4% had a female householder with no husband present, and 22.1% were non-families. 17.9% of all households were made up of individuals and 8.9% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 2.75 people. In the city the population was spread out with 19.9% under the age of 18, 7.0% from 18 to 24, 22.4% from 25 to 44, 25.3% from 45 to 64, and 25.4% who were 65 years of age or older. The median age was 46 years. For every 100 females there were 96.6 males. For every 100 females age 18 and over, there were 94.9 males. The median income for a household in the city was US$44,156, and the median income for a family was US$47,899. Males had a median income of US$33,079 versus US$26,347 for females. The per capita income for the city was US$21,451. About 5.6% of families and 8.7% of the population were below the poverty line, including 16.7% of those under age 18 and 3.3% of those age 65 or over. Source: http://en.wikipedia.org/wiki/Surprise%2C_Arizona